Apple Releases watchOS 5.2 With ECG Functionality in Europe and Hong Kong, AirPods 2 Support

Apple today released watchOS 5.2, the fifth update to the watchOS operating system that runs on modern Apple Watch models. watchOS 5.2 comes more than two months after the release of watchOS 5.1.3, a bug fix update.

watchOS 5.2 can be downloaded for free through the dedicated Apple Watch app on the iPhone by going to General > Software Update. To install the new software, the Apple Watch needs to have at least 50 percent battery, it needs to be placed on a charger, and it needs to be in range of the ‌iPhone‌.

applewatchseries4ecgfeature
The watchOS 5.2 update expands the availability of the ECG app to Hong Kong and 19 European countries, including Austria, Belgium, Denmark, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Romania, Spain, Sweden, Switzerland, and the UK.

"We've seen the ECG App and irregular rhythm notifications on Apple Watch have meaningful impact on our customers across the United States" said Jeff Williams, Apple's chief operating officer. "We are excited to bring these features to customers in Europe and Hong Kong, giving them access to empowering information about their heart health."

Countries where ECG functionality has been added will also have access to irregular heart rhythm notifications, which will allow the Apple Watch to send you a notification if an irregular rhythm is detected.

The ECG feature was introduced in watchOS 5.1.3 in December 2018, but at launch, it was limited to the United States, Puerto Rico, US Virgin Islands, and Guam. Today's release of watchOS 5.2 marks the first time ECG functionality has expanded to other countries.


An ECG, or electrocardiogram, is designed to measure the electrical activity of the heart to detect abnormal rhythms and diagnose serious heart conditions.

The Apple Watch Series 4 is designed to let users take a single-lead electrocardiogram using electrodes built into the sapphire crystal of the Apple Watch and the Digital Crown to keep an eye on heart health The electrodes detect the electrical impulses from the heartbeat and route the data to the S4 processor in the device, where it is converted into a signal for Apple's algorithms.

ecg2
Capturing an ECG is as simple as wearing the Apple Watch, initiating the test, and placing a finger on the Digital Crown of the device for 30 seconds. After an ECG reading has been captured, Apple will provide a heart rhythm classification that can be shared with your doctor.

ecg 3
If your heart is beating in a normal rhythm, Apple will let you know that a standard sinus rhythm has been detected. If your heart is not beating normally, however, the app will let you know that atrial fibrillation has been detected.

Along with ECG functionality, today's watchOS 5.2 update introduces support for the second-generation AirPods, allowing them to be used with the Apple Watch, and it supports real-time text (RTT) for phone calls.

airpodshandson
There are also two new watch faces for Hermès watches that match the spring Hermès band collection, and the update introduces support for the Apple News+ feature added to iOS earlier this week.

newhermeswatchfaceswatchos52
Apple's full release notes for the watchOS 5.2 update are below:

ECG app on Apple Watch Series 4 now available in Hong Kong and some regions in Europe. For a list of available regions, visit:
https://www.apple.com/watchos/feature-availability/
- Irregular heart rhythm notifications now available in Hong Kong and some regions in Europe. For a list of available regions, visit:
https://www.apple.com/watchos/feature-availability/
- Adds support for AirPods (2nd generation)
- Supports real-time text (RTT) for phone calls

For more on watchOS 5, make sure to check out our full watchOS 5 roundup.

Related Roundup: Apple Watch 11
Buyer's Guide: Apple Watch (Buy Now)

Popular Stories

iphone 17 models

No iPhone 18 Launch This Year, Reports Suggest

Thursday January 1, 2026 8:43 am PST by
Apple is not expected to release a standard iPhone 18 model this year, according to a growing number of reports that suggest the company is planning a significant change to its long-standing annual iPhone launch cycle. Despite the immense success of the iPhone 17 in 2025, the iPhone 18 is not expected to arrive until the spring of 2027, leaving the iPhone 17 in the lineup as the latest...
apple intelligence black

Report: Apple's AI Strategy Could Finally Pay Off in 2026

Tuesday December 30, 2025 9:01 am PST by
Apple's restrained artificial intelligence strategy may pay off in 2026 amid the arrival of a revamped Siri and concerns around the AI market "bubble" bursting, The Information argues. The speculative report notes that Apple has taken a restrained approach with AI innovations compared with peers such as OpenAI, Google, and Meta, which are investing hundreds of billions of dollars in data...
apple fitness 2026 1

Apple Teases 'Something Big' Coming Soon to Apple Fitness+

Tuesday December 30, 2025 2:11 pm PST by
The Apple Fitness+ Instagram account today teased that the service has "big plans" for 2026. In a video, several Apple Fitness+ trainers are shown holding up newspapers with headlines related to Apple Fitness+. What's Apple Fitness+ Planning for the New Year? Something Big is Coming to Apple Fitness+ The Countdown Begins. Apple Fitness+ 2026 is Almost Here 2026 Plans Still Under ...
iphone 17 pro dark blue 1

iPhone 17 Pro and Pro Max Users Report Static Speaker Noise While Charging

Tuesday December 30, 2025 10:39 am PST by
iPhone 17 Pro and Pro Max owners are having trouble with the speakers of their devices, and have complained about a static or hissing noise that occurs when the iPhone is charging. There are multiple discussions about the issue on Reddit, the MacRumors forums, and Apple's Support Community, where affected users say there is a noticeable static noise "like an old radio." Some people report...
maxresdefault

Where's the New Apple TV?

Monday December 22, 2025 11:30 am PST by
Apple hasn't updated the Apple TV 4K since 2022, and 2025 was supposed to be the year that we got a refresh. There were rumors suggesting Apple would release the new Apple TV before the end of 2025, but it looks like that's not going to happen now. Subscribe to the MacRumors YouTube channel for more videos. Bloomberg's Mark Gurman said several times across 2024 and 2025 that Apple would...
maxresdefault

Hands-On With a Rough iPhone Fold Mockup

Monday December 29, 2025 10:55 am PST by
Apple is rumored to be introducing a foldable iPhone in September 2026, and since it will bring the biggest form factor change since the iPhone was introduced in 2007, curiosity about the design is high. A 3D designer created an iPhone Fold design based on rumors, and we printed it out to see how it compares to Apple's current iPhones. Subscribe to the MacRumors YouTube channel for more ...
Mac Pro Feature Blue

What's Happening With the Mac Pro?

Wednesday December 31, 2025 9:59 am PST by
Apple hasn't updated the Mac Pro since 2023, and according to recent rumors, there's no update coming in the near future. In fact, Apple might be finished with the Mac Pro. Bloomberg recently said that the Mac Pro is "on the back burner" and has been "largely written off" by Apple. Apple apparently views the more compact Mac Studio as the ideal high-end pro-level desktop, and it has almost...
macbook air march 2020

Apple Says Final Intel MacBook Air and Apple Watch Series 5 Now 'Vintage'

Wednesday December 31, 2025 8:39 am PST by
Apple today added the final 13-inch MacBook Air powered by Intel processors, the Apple Watch Series 5, and additional products to its vintage products list. The iPhone 11 Pro was also added to the list after the iPhone 11 Pro Max was added back in September. The full list of products added to Apple's vintage and obsolete list today: MacBook Air (Retina, 13-inch, 2020) iPhone 8 Plus 128GB ...

Top Rated Comments

rjp1 Avatar
88 months ago
Please have the sunrise/sunset complication added. Extremely frustrated that they couldn't make their own complications work with the new Infograph watch face.
Score: 24 Votes (Like | Disagree)
realtuner Avatar
88 months ago
Just release it everywhere, come on Apple.
It’s not up to Apple. It’s essentially a medical device and must be approved by the appropriate agency in each country (like the FDA in the US).

Now hurry up and bring it to Canada.
Score: 20 Votes (Like | Disagree)
jakeuten Avatar
88 months ago
If you start the update and turn off bluetooth on your phone (turn it off, not just from control center) the watch will download the update via Wi-Fi which is a hell of a lot faster than Bluetooth.
Score: 10 Votes (Like | Disagree)
willryan42 Avatar
88 months ago
Please have the sunrise/sunset complication added. Extremely frustrated that they couldn't make their own complications work with the new Infographi watch face.
Hm? I've been using the sunrise/sunset complication with the infographic face since I first got the S4 watch...
Score: 6 Votes (Like | Disagree)
iGeek2014 Avatar
88 months ago
Cue the NHS being inundated /s
Score: 6 Votes (Like | Disagree)
AngerDanger Avatar
88 months ago
Keep those download times coming, folks! We're on the edges of our seats!
Score: 5 Votes (Like | Disagree)